a) In an SQL, unique construct can be used to remove duplicates from a relation. true or false
Added by Robert T.
Step 1
The UNIQUE constraint is used to ensure that all values in a column are different from one another, preventing duplicate entries in that specific column. Show more…
Show all steps
Your feedback will help us improve your experience
Madhur L and 84 other AP CS educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The reduced row echelon form of a matrix is unique. Select one: True False
Madhur L.
True or False: 1) Values of existing data can be changed using SQL through the CHANGE Command. 2) Theoretically, databases could store instances in columns and characteristics in rows, instead of the other way around. 3) For efficiency purposes, data analysis should be done on the production database. --- Which of the following cannot be done using the CONSTRAINT phrase? Defining a name for the constraint. Define a foreign key. Create a single attribute primary key. Establish a referential integrity constraint. Define an attribute to be NOT NULL.
Akash M.
'Q A data set can have more than one mode Select one: a. false b. true'
Pritesh R.
Recommended Textbooks
Computer Science and Information Technology
Introduction to Programming Using Python
Computer Science - An Overview
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD